Merge remote-tracking branch 'remotes/origin/master' into submission

# Conflicts:
#	src/app/+search-page/search-service/search.service.spec.ts
#	src/app/app.component.spec.ts
#	src/app/app.component.ts
#	src/app/core/auth/auth-response-parsing.service.ts
#	src/app/core/cache/models/normalized-object-factory.ts
#	src/app/core/cache/models/normalized-resource-policy.model.ts
#	src/app/core/core.module.ts
#	src/app/core/data/base-response-parsing.service.ts
#	src/app/core/data/config-response-parsing.service.spec.ts
#	src/app/core/data/config-response-parsing.service.ts
#	src/app/core/data/dso-response-parsing.service.ts
#	src/app/core/data/request.models.ts
#	src/app/core/data/search-response-parsing.service.ts
#	src/app/core/integration/integration-response-parsing.service.spec.ts
#	src/app/core/integration/integration-response-parsing.service.ts
#	src/app/core/shared/item.model.ts
#	src/app/core/shared/resource-policy.model.ts
#	src/app/core/shared/resource-type.ts
#	src/app/shared/shared.module.ts
#	src/app/thumbnail/thumbnail.component.html

src/app/app.component.ts

@@ -1,4 +1,13 @@
-import { ChangeDetectionStrategy, Component, HostListener, Inject, OnInit, ViewEncapsulation } from '@angular/core';
+import {
+  AfterViewInit,
+  ChangeDetectionStrategy,
+  Component,
+  HostListener,
+  Inject,
+  OnInit,
+  ViewEncapsulation
+} from '@angular/core';
+import { NavigationCancel, NavigationEnd, NavigationStart, Router } from '@angular/router';
 
 import { Store } from '@ngrx/store';
 
@@ -22,7 +31,8 @@ import { RouteService } from './shared/services/route.service';
   changeDetection: ChangeDetectionStrategy.OnPush,
   encapsulation: ViewEncapsulation.None
 })
-export class AppComponent implements OnInit {
+export class AppComponent implements OnInit, AfterViewInit {
+  isLoading = true;
 
   constructor(
     @Inject(GLOBAL_CONFIG) public config: GlobalConfig,
@@ -32,6 +42,7 @@ export class AppComponent implements OnInit {
     private metadata: MetadataService,
     private angulartics2GoogleAnalytics: Angulartics2GoogleAnalytics,
     private authService: AuthService,
+    private router: Router,
     private routeService: RouteService
   ) {
     // this language will be used as a fallback when a translation isn't found in the current language
@@ -62,6 +73,20 @@ export class AppComponent implements OnInit {
 
   }
 
+  ngAfterViewInit() {
+    this.router.events
+      .subscribe((event) => {
+        if (event instanceof NavigationStart) {
+          this.isLoading = true;
+        } else if (
+          event instanceof NavigationEnd ||
+          event instanceof NavigationCancel
+        ) {
+          this.isLoading = false;
+        }
+      });
+  }
+
   @HostListener('window:resize', ['$event'])
   private onResize(event): void {
     this.dispatchWindowSize(event.target.innerWidth, event.target.innerHeight);